ModelNode slNode = null;
if (operation.has(ModelConstants.STARTLEVEL)) {
slNode = operation.get(ModelConstants.STARTLEVEL);
model.get(ModelConstants.STARTLEVEL).set(slNode);
}
final Integer startLevel = (slNode != null ? slNode.asInt() : null);
String identifier = operation.get(ModelDescriptionConstants.OP_ADDR).asObject().get(ModelConstants.CAPABILITY).asString();
OSGiCapability module = new OSGiCapability(identifier, startLevel);
SubsystemState subsystemState = SubsystemState.getSubsystemState(context);